Develop Reference

Amazon ECS API spontaneous "(400) Bad Request" errors for ItemSearch()

Starting at about 11 PM CST on 5/29/2017, I began receiving "(400) Bad Request" errors for all my ItemSearch() calls. I am using the C# API and have been doing so successfully for well over a year now with no problems. No code or configuration has changed on my end, and I have been able to reproduce the error both in production and development. My security credentials appear to still be valid according to the IAM Management Console, and I haven't received any communications from Amazon that would indicate that my account has been deactivated or anything of that nature.
This is what is returned for all of my calls:
System.ServiceModel.ProtocolException: The remote server returned an unexpected response: (400) Bad Request. ---> System.Net.WebException: The remote server returned an error: (400) Bad Request.
at System.Net.HttpWebRequest.GetResponse()
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
--- End of inner exception stack trace ---
Server stack trace:
at System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse(HttpWebRequest request, HttpWebResponse response, HttpChannelFactory`1 factory, WebException responseException, ChannelBinding channelBinding)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at MyCode.com.amazonaws.ecs.AWSECommerceServicePortType.ItemSearch(ItemSearchRequest1 request)
Is anyone else experiencing this?
I did check this very old thread, but I don't believe it's relevant given how this sprung up out of nowhere and has been working perfectly for so long.

WCF: The socket connection was aborted. A receive timeout being exceeded by the remote host

I have been working through a head-scratcher with WCF. I have a WCF Service (hosted as a Windows Service) that is called by a console application. It works great, but recently we have run into a timeout issue at 10 minutes when we had to run a query against a legacy system.
I use log4net in both the service and the client .exe, and what is strange is that the service actually completes the job and throws no exception. It runs the query (which takes about 12 minutes, and creates a file, and logs success).
The console application, however, logs an exception, claiming that the "host" returned a timeout or an error. I presume it's a timeout and not a buffer issue, because the exception always happens exactly 10 minutes to the second after the call is initially made.
Here is the exception/stack info from my log4net:
2015-07-28 17:35:47,364 [1]
System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:29:59.9843999'. ---> System.IO.IOException: The read operation failed, see inner exception. ---> System.ServiceModel.CommunicationException: The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:29:59.9843999'. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
--- End of inner exception stack trace ---
at System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, Boolean closing)
at System.ServiceModel.Channels.SocketConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at System.ServiceModel.Channels.DelegatingConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at System.ServiceModel.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.NegotiateStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.NegotiateStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
--- End of inner exception stack trace ---
at System.Net.Security.NegotiateStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.NegotiateStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
--- End of inner exception stack trace ---
Server stack trace:
at System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at System.ServiceModel.Channels.SessionConnectionReader.Receive(TimeSpan timeout)
at System.ServiceModel.Channels.SynchronizedMessageSource.Receive(TimeSpan timeout)
at System.ServiceModel.Channels.TransportDuplexSessionChannel.Receive(TimeSpan timeout)
at System.ServiceModel.Channels.TransportDuplexSessionChannel.TryReceive(TimeSpan timeout, Message& message)
at System.ServiceModel.Dispatcher.DuplexChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at FileGeneratorConsole.FileGeneratorServiceReference.IFileGeneratorService.GenerateXmlFileFromSql(String sqlServer, String sqlDatabase, String sqlQuery, Int32 commandTimeout, Boolean allowEmptyResult, String outputFileName, String xslFileName, Boolean archiveExistingFile)
at FileGeneratorConsole.Program.Main(String[] args)
Now, I thought I had done my research and figured out what the issue could be. I assumed it was the sendTimeout and receiveTimeout that are part of the binding definition, so I've added that:
<bindings>
<netTcpBinding>
<binding name="NetTcpBinding_IFileGeneratorService"
maxBufferPoolSize="2147483647"
maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647"
receiveTimeout="00:30:00"
closeTimeout="00:30:00"
openTimeout="00:30:00"
sendTimeout="00:30:00">
</binding>
</netTcpBinding>
</bindings>
And, if you notice in the exception above, you'll see that the error says:
Local socket timeout was '00:29:59.9843999'
It used to say 00:09:59.... so it looks like that took.
I also added this to the service config file, just in case the binding needed to be on both sides, but that didn't help.
Lastly, out of desperation, I added a few other things. I tried adding timeouts to the service section:
and I tried adding
to the behavior itself.
I'm at a loss now, it always dies at 10 minutes.
Thanks in advance

It's always simpler than you think.
Sadly, what was missing all this time was the bindingConfiguration reference in the service.endpoint. All this time, the service was running assumedly using the default binding definition. I had a binding defined in my config, but had missed the part where you specify:
I had:
<endpoint address="" binding="netTcpBinding" bindingConfiguration="">
I needed:
<endpoint address="" binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IFileGeneratorService">
Once that was in place, my actual service endpoint was looking at the right binding properties.

WCF throwing before sending response to client

I have a WCF service where IGameServices contains:
[ServiceContract]
public interface IGameServices
{
[OperationContract]
DtoReturnedMessage<DtoGame> GetGame(Guid gameId);
}
AdminServices contains:
public class AdminService : IGameServices
{
private readonly BoGame _boGame = new BoGame();
public DtoReturnedMessage<DtoGame> GetGame(Guid gameId)
{
return _boGame.Get(gameId);
}
}
I have that BoGame, which is a class with business logics.
My config is:
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_IGameServices" sendTimeout="00:05:00" />
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:50380/Services/Implementations/AdminService.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IGameServices"
contract="IGameServices" name="BasicHttpBinding_IGameServices" />
</client>
</system.serviceModel>
When I debug it step-by-step, all the business logics works properly, and throws the exception below when the response should be sent to the client.
An error occurred while receiving the HTTP response to http://localhost:50380/Services/Implementations/AdminService.svc. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details.
Server stack trace:
at System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at IGameServices.GetGame(Guid gameId)
at GameServicesClient.GetGame(Guid gameId)
Inner Exception:
The underlying connection was closed: An unexpected error occurred on a receive.
at System.Net.HttpWebRequest.GetResponse()
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
Inner Exception:
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead)
Inner Exception:
An existing connection was forcibly closed by the remote host
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
It is weird because I have a method to save some data into the DB, in the same IGameServices, which saves normally and returns the success message as expected.
Does any one know what that can be?

I solved the problem. The error was too generic, actually. The issue was with build versions of Postsharp not matching.
I found it out by trying to open the services directly on the browser. I removed Postsharp in that project and BANG.

WCF Service TargetInvocationException - Possible Cyclic Reference

I need a little help with an Exception being thrown at my WCF service. The point is: I need to develop a WPF application and I've heard that to treat data WCF is the best choice so I used it only with basic knowledge and now I have this problem.
The point is, I have a Customer class, a Supplier class and an Order class. I have then two services: the first one has all methods to add, read and edit customers and suppliers from database. This service works perfectly fine. The second service has methods to add new orders, edit orders and read them from database, and this service has a problem.
The class Customer has a list of Suppliers (the suppliers from which the customer buys), the class Supplier has a list of Customers (the customers that buy from that supplier). The class order has a Customer, a Supplier and a list of Itens (and the itens are added to the database together with the order).
The method for adding an order works fine, however, once an order has been added, the method to list the orders throws the TargetInvocationException. I searched a lot on the internet and the best answer I've found is that it's possibly a "Ciclyc Reference".
The method to list the orders is inside the repository class and is simply:
public IQueryable<Order> ListOrders()
{
return Context.Set<Order>().Include(x => x.Customer).Include(x => x.Supplier);
}
Where Context is the entity framework context. I tried to remove the includes and load the customer and supplier separately, but the result was the same exception.
Can someone please help me ? If I need to post more information just tell me. And sorry if this matter is trivial, I'm new to WPF and WCF so I'm still a little confused.
Thanks a lot in advance.
EDIT Exception below
An error occurred while receiving the HTTP response to
http://SomeService.com/OrdersService.svc. This could be due to the
service endpoint binding not using the HTTP protocol. This could also
be due to an HTTP request context being
aborted by the server (possibly due to the service shutting down). See
server logs for more details.
Server stack trace: at
System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException
webException, HttpWebRequest request, HttpAbortReason abortReason)
at
System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan
timeout) at
System.ServiceModel.Channels.RequestChannel.Request(Message message,
TimeSpan timeout) at
System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message
message, TimeSpan timeout) at
System.ServiceModel.Channels.ServiceChannel.Call(String action,
Boolean oneway, ProxyOperationRuntime operation, Object[] ins,
Object[] outs, TimeSpan timeout) at
System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage
methodCall, ProxyOperationRuntime operation) at
System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage
message)
Exception rethrown at [0]: at
System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage
reqMsg, IMessage retMsg) at
System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&
msgData, Int32 type) at IOrdersService.ReturnOrders() at
OrdersServiceClient.ReturnOrders()
Inner Exception: The underlying connection was closed: An unexpected
error occurred on a receive. at
System.Net.HttpWebRequest.GetResponse() at
System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan
timeout)
Inner Exception: Unable to read data from the transport connection: An
existing connection was forcibly closed by the remote host. at
System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset,
Int32 size) at System.Net.PooledStream.Read(Byte[] buffer, Int32
offset, Int32 size) at
System.Net.Connection.SyncRead(HttpWebRequest request, Boolean
userRetrievedStream, Boolean probeRead)
Inner Exception: An existing connection was forcibly closed by the
remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer,
Int32 offset, Int32 size, SocketFlags socketFlags) at
System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset,
Int32 size)

Mark your data objects with the [DataContract(IsReference = true)] attribute. This should resolve the issue.

Sharepoint 2010 problems with WCF service

I need to create wcf service for sharepoint 2010. The idea to use Jquery ajax to communicate with this service. But all cals to service methods always fail.
The
I try to use WCF Test Client and get message:
Failed to invoke the service. Possible causes: The service is offline or inaccessible; the client-side configuration does not match the proxy; the existing proxy is invalid. Refer to the stack trace for more detail. You can try to recover by starting a new proxy, restoring to default configuration, or refreshing the service.
and error detais:
The content type text/html; charset=utf-8 of the response message does not match the content type of the binding (text/xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 227 bytes of the response were: 'A transport-level error has occurred when sending the request to the server. (provider: Shared Memory Provider, error: 0 - Either a required impersonation level was not provided, or the provided impersonation level is invalid.)'.
Server stack trace:
at System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse(HttpWebRequest request, HttpWebResponse response, HttpChannelFactory factory, WebException responseException, ChannelBinding channelBinding)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at ITV2WCFService.DoWork()
at TV2WCFServiceClient.DoWork()
But service http://localhost/_vti_bin/site/TEMPSERVICE.svc/mex is avaliable and give me normal response.
Everything done according to article on msdn
http://msdn.microsoft.com/en-us/library/ff521581.aspx
Whats the problem and how to deal with it?

Evgeny:
It looks like your webservice returns standard SOAP XML response. JQuery expects to use JSON. I think the easier way is to set JQuery to use XML. Alternatively you can change your web service to return JSON instead of XML.

Solution: Anonymous access have to be enabled!